ref: 9cba1ebbc1de8191dc6c8055e2c1a76cbd2ed4cf
dir: /examples/aubionotesmedian.c/
/*
Copyright (C) 2003 Paul Brossier
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <getopt.h>
#include <unistd.h>
#include "aubio.h"
#include "utils.h"
#include <math.h> //required for FLOORF :(
/* settings */
const char * output_filename = NULL;
const char * input_filename = NULL;
const char * onset_filename = "/usr/share/sounds/aubio/woodblock.aiff";
int verbose = 0;
int usejack = 0;
int usedoubled = 1;
int usemidi = 1;
/* energy,specdiff,hfc,complexdomain,phase */
aubio_onsetdetection_type type_onset = hfc;
aubio_onsetdetection_type type_onset2 = complexdomain;
smpl_t threshold = 0.3;
smpl_t threshold2 = -90.;
uint_t buffer_size = 1024;
uint_t overlap_size = 512;
uint_t channels = 1;
uint_t samplerate = 44100;
/* global objects */
int frames;
aubio_pvoc_t * pv;
fvec_t * ibuf;
fvec_t * obuf;
cvec_t * fftgrain;
fvec_t * woodblock;
aubio_onsetdetection_t *o;
aubio_onsetdetection_t *o2;
fvec_t *onset;
fvec_t *onset2;
int isonset = 0;
aubio_pickpeak_t * parms;
/* pitch objects */
smpl_t pitch = 0.;
cvec_t * fftpitch = NULL;
aubio_filter_t * filter = NULL;
aubio_pvoc_t * pvi = NULL;
aubio_pitchmcomb_t * p = NULL;
fvec_t * note_buffer = NULL;
fvec_t * note_buffer2 = NULL;
uint_t medianfiltlen = 6;
smpl_t curlevel = 0;
smpl_t maxonset = 0.;
/* midi objects */
aubio_midi_player_t * mplay;
aubio_midi_driver_t * mdriver;
aubio_midi_event_t * event;
void send_noteon(aubio_midi_driver_t * d, int pitch, int velo);
void send_noteon(aubio_midi_driver_t * d, int pitch, int velo)
{
/* we should check if we use midi here, not jack */
#if ALSA_SUPPORT
if (usejack) {
if (velo==0) {
aubio_midi_event_set_type(event,NOTE_OFF);
} else {
aubio_midi_event_set_type(event,NOTE_ON);
}
aubio_midi_event_set_channel(event,0);
aubio_midi_event_set_pitch(event,pitch);
aubio_midi_event_set_velocity(event,velo);
aubio_midi_direct_output(mdriver,event);
} else
#endif
{
if (velo==0) {
outmsg("%f\n",frames*overlap_size/(float)samplerate);
} else {
outmsg("%d\t%f\t",pitch,frames*overlap_size/(float)samplerate);
}
}
}
/** append new note candidate to the note_buffer and return filtered value. we
* need to copy the input array as vec_median destroy its input data.*/
void note_append(fvec_t * note_buffer, smpl_t curnote);
void note_append(fvec_t * note_buffer, smpl_t curnote) {
uint_t i = 0;
for (i = 0; i < note_buffer->length - 1; i++) {
note_buffer->data[0][i] = note_buffer->data[0][i+1];
}
note_buffer->data[0][note_buffer->length - 1] = curnote;
return;
}
uint_t get_note(fvec_t *note_buffer, fvec_t *note_buffer2);
uint_t get_note(fvec_t *note_buffer, fvec_t *note_buffer2){
uint_t i = 0;
for (i = 0; i < note_buffer->length; i++) {
note_buffer2->data[0][i] = note_buffer->data[0][i];
}
return vec_median(note_buffer2);
}
smpl_t curnote = 0.;
smpl_t newnote = 0.;
uint_t isready = 0;
int aubio_process(float **input, float **output, int nframes);
int aubio_process(float **input, float **output, int nframes) {
unsigned int i; /*channels*/
unsigned int j; /*frames*/
unsigned int pos = 0; /*frames%dspblocksize*/
for (j=0;j<nframes;j++) {
if(usejack) {
for (i=0;i<channels;i++) {
/* write input to datanew */
fvec_write_sample(ibuf, input[i][j], i, pos);
/* put synthnew in output */
output[i][j] = fvec_read_sample(obuf, i, pos);
}
}
/*time for fft*/
if (pos == overlap_size-1) {
/* block loop */
aubio_pvoc_do (pv,ibuf, fftgrain);
aubio_onsetdetection(o,fftgrain, onset);
if (usedoubled) {
aubio_onsetdetection(o2,fftgrain, onset2);
onset->data[0][0] *= onset2->data[0][0];
}
isonset = aubio_peakpick_pimrt(onset,parms);
aubio_filter_do(filter,ibuf);
aubio_filter_do(filter,ibuf);
aubio_pvoc_do(pvi,ibuf, fftpitch);
pitch = aubio_pitchmcomb_detect(p,fftpitch);
newnote = (FLOOR)(bintomidi(pitch,samplerate,buffer_size*4)+.5);
note_append(note_buffer, newnote);
//outmsg("%f %f\n", pitch, newnote);
/* curlevel is negatif or 1 if silence */
curlevel = aubio_level_detection(ibuf, threshold2);
if (isonset) {
/* test for silence */
if (curlevel == 1.) {
isonset=0;
isready=0;
/* send note off */
send_noteon(mdriver,curnote,0);
} else {
isready = 1;
for (pos = 0; pos < overlap_size; pos++){
obuf->data[0][pos] = woodblock->data[0][pos];
}
}
} else {
// if (curlevel != 1) {
// if (bufpos == note_buffer->length)
// curnote = aubio_getnote(note_buffer);
// }
//
if (isready > 0)
isready++;
if (isready == note_buffer->length)
{
//outmsg("%d, %f\n", isready, curnote);
send_noteon(mdriver,curnote,0);
/* kill old note */
newnote = get_note(note_buffer, note_buffer2);
curnote = newnote;
/* get and send new one */
/*if (curnote<45){
send_noteon(mdriver,curnote,0);
} else {*/
if (curnote>45){
send_noteon(mdriver,curnote,127+(int)FLOOR(curlevel));
}
}
for (pos = 0; pos < overlap_size; pos++)
obuf->data[0][pos] = 0.;
}
/* end of block loop */
//aubio_pvoc_rdo(pv,fftgrain, obuf);
pos = -1; /* so it will be zero next j loop */
}
pos++;
}
return 1;
}
int main(int argc, char **argv) {
aubio_file_t * file = NULL;
aubio_file_t * fileout = NULL;
aubio_file_t * onsetfile = new_file_ro(onset_filename);
/* parse command line arguments */
parse_args(argc, argv);
if(!usejack)
{
debug("Opening files ...\n");
file = new_file_ro (input_filename);
file_info(file);
channels = aubio_file_channels(file);
if (output_filename != NULL)
fileout = new_file_wo(file, output_filename);
}
ibuf = new_fvec(overlap_size, channels);
obuf = new_fvec(overlap_size, channels);
woodblock = new_fvec(buffer_size,1);
fftgrain = new_cvec(buffer_size, channels);
pvi = new_aubio_pvoc(buffer_size*4, overlap_size, channels);
fftpitch = new_cvec(buffer_size*4, channels);
filter = new_aubio_adsgn_filter((smpl_t)samplerate);
p = new_aubio_pitchmcomb(buffer_size*4,channels);
note_buffer = new_fvec(medianfiltlen, 1);
note_buffer2= new_fvec(medianfiltlen, 1);
/* read the output sound once */
file_read(onsetfile, overlap_size, woodblock);
/* phase vocoder */
debug("Phase voc init ... \n");
pv = new_aubio_pvoc(buffer_size, overlap_size, channels);
/* onsets */
parms = new_aubio_peakpicker(threshold);
o = new_aubio_onsetdetection(type_onset,buffer_size,channels);
onset = new_fvec(1, channels);
if (usedoubled) {
o2 = new_aubio_onsetdetection(type_onset2,buffer_size,channels);
onset2 = new_fvec(1 , channels);
}
if(usejack) {
#ifdef JACK_SUPPORT
aubio_jack_t * jack_setup;
debug("Midi init ...\n");
debug("Jack init ...\n");
jack_setup = new_aubio_jack(channels, channels,
(aubio_process_func_t)aubio_process);
mplay = new_aubio_midi_player();
mdriver = new_aubio_midi_driver("alsa_seq",
(handle_midi_event_func_t)aubio_midi_send_event, mplay);
event = new_aubio_midi_event();
debug("Jack activation ...\n");
aubio_jack_activate(jack_setup);
debug("Processing (Ctrl+C to quit) ...\n");
pause();
send_noteon(mdriver,curnote,0);
aubio_jack_close(jack_setup);
del_aubio_midi_driver(mdriver);
#else
outmsg("Compiled without jack output, exiting.");
#endif
} else {
/* phasevoc */
debug("Processing ...\n");
frames = 0;
while (overlap_size == file_read(file, overlap_size, ibuf))
{
isonset=0;
aubio_process(ibuf->data, obuf->data, overlap_size);
if (output_filename != NULL) {
file_write(fileout,overlap_size,obuf);
}
frames++;
}
send_noteon(mdriver,curnote,0);
debug("Processed %d frames of %d samples.\n", frames, buffer_size);
del_file(file);
if (output_filename != NULL)
del_file(fileout);
}
del_aubio_pvoc(pv);
del_fvec(obuf);
del_fvec(ibuf);
del_cvec(fftgrain);
del_cvec(fftpitch);
del_aubio_pvoc(pvi);
del_fvec(onset);
del_fvec(note_buffer);
del_fvec(note_buffer2);
debug("End of program.\n");
fflush(stderr);
return 0;
}